/* ============================================================
   51吃瓜今日吃瓜必吃 · 整站样式
   视觉方向：活动日程风 · 深蓝 + 琥珀黄
   ============================================================ */

/* ============================================================
   1. Base —— 变量 / 重置 / 全局
   ============================================================ */
:root {
  --color-primary: #0B1F3A;
  --color-accent: #E89A00;
  --color-bg-soft: #F0F4F8;
  --color-text: #333333;
  --color-text-secondary: #6B7280;
  --color-white: #FFFFFF;
  --color-border: #E2E8F0;
  --color-bg-deep: #081729;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;

  --container-width: 1200px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;

  --transition-base: 0.2s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-white);
}

body,
.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1 0 auto;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-accent);
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-primary);
}

h1 {
  font-size: 34px;
}

h2 {
  font-size: 26px;
}

h3 {
  font-size: 20px;
}

p {
  margin-bottom: 0.5rem;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* 视觉隐藏，仅供屏幕阅读器 */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   2. Layout —— 全站骨架
   ============================================================ */

/* ---------- 顶部工具栏 ---------- */
.topbar {
  background-color: var(--color-bg-deep);
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
}

.topbar-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 6px 24px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

.topbar-item {
  color: rgba(255, 255, 255, 0.7);
}

.topbar-divider {
  width: 1px;
  height: 12px;
  background-color: rgba(255, 255, 255, 0.2);
}

.topbar-link {
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
}

.topbar-link:hover {
  color: var(--color-accent);
}

.topbar-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(255, 255, 255, 0.85);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #4ADE80;
  display: inline-block;
}

/* ---------- 页头 / 主导航 ---------- */
.site-header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}

.brand {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
  flex-shrink: 0;
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
}

.brand-slogan {
  font-size: 12px;
  color: var(--color-text-secondary);
}

.main-nav {
  flex: 1;
  display: flex;
  justify-content: flex-end;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-block;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-primary);
  border-radius: var(--radius-sm);
}

.nav-link:hover {
  color: var(--color-accent);
}

.nav-link.is-current {
  color: var(--color-accent);
  font-weight: 600;
}

.nav-link.is-current::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  background-color: var(--color-accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 1px;
  margin: 0 auto;
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 16px 24px 0;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.breadcrumb a {
  color: var(--color-text-secondary);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb-sep {
  margin: 0 8px;
  color: #9CA3AF;
}

.breadcrumb-current {
  color: var(--color-primary);
  font-weight: 500;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb-item a {
  color: var(--color-text-secondary);
}

.breadcrumb-item a:hover {
  color: var(--color-accent);
}

/* ---------- 页脚 ---------- */
.site-footer {
  background-color: var(--color-bg-deep);
  color: rgba(255, 255, 255, 0.8);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.footer-col h3 {
  color: var(--color-white);
  font-size: 16px;
  margin-bottom: 16px;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}

.footer-links a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 16px 24px;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* ---------- 内页标题区 ---------- */
.page-title-area {
  background-color: var(--color-bg-soft);
  border-bottom: 1px solid var(--color-border);
}

.page-title-area .container {
  padding: 32px 24px;
}

.page-intro,
.page-lead,
.page-subtitle,
.page-title-desc {
  max-width: 760px;
  font-size: 16px;
  color: var(--color-text-secondary);
}

.page-header {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 8px;
}

.page-title {
  font-size: 34px;
  line-height: 1.3;
}

/* ---------- 内页布局容器 ---------- */
.layout-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
  align-items: start;
}

.page-content {
  min-width: 0;
}

/* 知识页布局 */
.page-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
  align-items: start;
}

.main-content {
  min-width: 0;
}

.sidebar {
  min-width: 0;
}

/* ============================================================
   3. Components —— 通用组件
   ============================================================ */

/* ---------- 按钮 ---------- */
.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-base);
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-primary);
}

.btn-primary:hover {
  background-color: #d18a00;
  color: var(--color-primary);
}

.btn-secondary {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* ---------- 区块标题 ---------- */
.section-head {
  margin-bottom: 32px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

.section-head h2 {
  font-size: 26px;
}

.section-desc {
  color: var(--color-text-secondary);
  font-size: 15px;
  max-width: 640px;
}

.section-link {
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  color: var(--color-accent);
}

.section-link:hover {
  color: var(--color-primary);
}

/* ---------- 日程卡片 ---------- */
.schedule-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.schedule-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  gap: 20px;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.schedule-card:hover {
  box-shadow: 0 4px 16px rgba(11, 31, 58, 0.08);
  transform: translateY(-2px);
}

.card-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 64px;
  height: 64px;
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-md);
}

.date-day {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
}

.date-month {
  font-size: 12px;
  color: var(--color-text-secondary);
}

.card-body {
  flex: 1;
}

.status-tag {
  display: inline-block;
  padding: 2px 10px;
  font-size: 12px;
  border-radius: 999px;
  margin-bottom: 8px;
  background-color: var(--color-bg-soft);
  color: var(--color-text-secondary);
}

.status-tag.status-open {
  background-color: #ECFDF5;
  color: #047857;
}

.status-tag.status-soon {
  background-color: #FFFBEB;
  color: #B45309;
}

.card-body h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.card-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
}

/* ---------- 知识摘要列表 ---------- */
.digest-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.digest-item {
  display: flex;
  gap: 20px;
  padding: 20px 24px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: box-shadow var(--transition-base);
}

.digest-item:hover {
  box-shadow: 0 4px 16px rgba(11, 31, 58, 0.08);
}

.digest-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 56px;
  height: 56px;
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.date-num {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
}

.digest-date .date-month {
  font-size: 12px;
}

.digest-content {
  flex: 1;
}

.digest-cat {
  display: inline-block;
  font-size: 12px;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 4px;
}

.digest-content h3 {
  font-size: 17px;
  margin-bottom: 4px;
}

.digest-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
}

.digest-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
}

/* ---------- 横向时间线 ---------- */
.timeline-horizontal {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

.timeline-node {
  position: relative;
  padding: 24px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
}

.node-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 12px;
}

.timeline-node h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.timeline-node p {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.process-cta {
  margin-top: 32px;
  text-align: center;
}

/* ---------- FAQ ---------- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-item summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 20px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item p {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--color-text-secondary);
  margin: 0;
}

/* ---------- 相关链接 ---------- */
.related-links {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

.related-links-item {
  font-size: 14px;
  color: var(--color-text-secondary);
  padding: 6px 16px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
}

.related-links-item:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ---------- 表格 ---------- */
.schedule-table-wrap {
  overflow-x: auto;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.schedule-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.schedule-table thead th {
  background-color: var(--color-bg-soft);
  padding: 14px 16px;
  text-align: left;
  font-weight: 600;
  color: var(--color-primary);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.schedule-table tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}

.schedule-table tbody tr:last-child td {
  border-bottom: none;
}

.schedule-table tbody tr:hover {
  background-color: #F8FAFC;
}

/* ---------- 图片容器 ---------- */
.content-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-bg-soft);
}

.content-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.content-media figcaption {
  padding: 8px 16px;
  font-size: 13px;
  color: var(--color-text-secondary);
  background-color: var(--color-bg-soft);
}

.content-media-primary {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto 48px;
  padding: 0 24px;
}

.content-media-primary img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.content-media-inline {
  margin: 24px 0;
}

.content-media-inline img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

/* ---------- 侧栏模块 ---------- */
.sidebar-module,
.side-module,
.aside-card,
.sidebar-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 24px;
}

.sidebar-module h2,
.side-module h2,
.aside-card h2,
.sidebar-card h2 {
  font-size: 18px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-accent);
}

.sidebar-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

/* ============================================================
   4. Pages —— 首页
   ============================================================ */

/* ---------- 首屏 ---------- */
.hero-section {
  background-color: var(--color-bg-soft);
  position: relative;
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 24px;
  pointer-events: none;
  opacity: 0.5;
}

.grid-date {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  font-weight: 700;
  color: var(--color-primary);
  opacity: 0.08;
  border: 1px dashed var(--color-primary);
  border-radius: var(--radius-lg);
}

.hero-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 64px 24px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
}

.hero-content h1 {
  font-size: 34px;
  line-height: 1.4;
  margin-bottom: 16px;
}

.hero-subtitle {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  max-width: 520px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-media {
  position: relative;
}

.hero-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(11, 31, 58, 0.12);
}

.hero-figure img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

/* ---------- 首页区块通用 ---------- */
.section-block {
  padding: 64px 0;
}

.section-block:nth-child(even) {
  background-color: var(--color-white);
}

.service-preview,
.knowledge-digest,
.process-overview,
.faq-preview {
  padding: 64px 0;
}

.service-preview,
.process-overview {
  background-color: var(--color-bg-soft);
}

.knowledge-digest,
.faq-preview {
  background-color: var(--color-white);
}

/* ============================================================
   5. Pages —— 服务矩阵
   ============================================================ */

.service-schedule-section,
.topic-detail-section {
  margin-bottom: 48px;
}

.service-schedule-section h2,
.topic-detail-section h2 {
  font-size: 22px;
  margin-bottom: 8px;
}

.topic-detail-section .section-desc {
  margin-bottom: 24px;
}

.topic-card {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 24px;
  padding: 24px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: 20px;
}

.topic-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
}

.topic-figure img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.topic-figure figcaption {
  padding: 6px 12px;
  font-size: 12px;
  color: var(--color-text-secondary);
  background-color: var(--color-bg-soft);
}

.topic-body h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.topic-body p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.topic-points {
  list-style: disc;
  padding-left: 20px;
}

.topic-points li {
  font-size: 14px;
  color: var(--color-text);
  margin-bottom: 4px;
}

/* 侧栏组合 */
.combine-item {
  padding: 16px;
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
}

.combine-item h3 {
  font-size: 15px;
  margin-bottom: 6px;
}

.combine-item p {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}

.combine-item a {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-accent);
}

.sidebar-note {
  padding: 16px;
  background-color: #FFFBEB;
  border-radius: var(--radius-md);
  border: 1px solid #FDE68A;
}

.sidebar-note p {
  font-size: 13px;
  color: var(--color-text);
  margin-bottom: 8px;
}

.sidebar-note a {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-accent);
}

/* 状态标签在表格内 */
.schedule-table .status-tag {
  margin-bottom: 0;
}

.status-tag.available {
  background-color: #ECFDF5;
  color: #047857;
}

.status-tag.upcoming {
  background-color: #FFFBEB;
  color: #B45309;
}

/* ============================================================
   6. Pages —— 知识体系
   ============================================================ */

.category-section,
.entry-section {
  margin-bottom: 48px;
}

.category-section h2,
.entry-section h2 {
  font-size: 22px;
  margin-bottom: 20px;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.category-card {
  padding: 20px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.category-card h3 {
  font-size: 16px;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
}

.category-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.entry-group {
  margin-bottom: 28px;
}

.entry-group h3 {
  font-size: 17px;
  margin-bottom: 12px;
  padding-left: 12px;
  border-left: 3px solid var(--color-accent);
}

.entry-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.entry-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
}

.entry-item a {
  color: var(--color-primary);
  font-weight: 500;
}

.entry-item a:hover {
  color: var(--color-accent);
}

.entry-date {
  font-size: 13px;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.entry-category {
  font-size: 12px;
  color: var(--color-accent);
  background-color: #FFFBEB;
  padding: 2px 8px;
  border-radius: 999px;
}

.content-figure {
  margin: 32px 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.content-figure img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.content-figure figcaption {
  padding: 8px 16px;
  font-size: 13px;
  color: var(--color-text-secondary);
  background-color: var(--color-bg-soft);
}

/* 侧栏版本表 */
.version-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.version-table thead th {
  padding: 8px;
  text-align: left;
  font-weight: 600;
  color: var(--color-primary);
  border-bottom: 1px solid var(--color-border);
}

.version-table tbody td {
  padding: 8px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}

.version-table tbody tr:last-child td {
  border-bottom: none;
}

/* ============================================================
   7. Pages —— 合作流程
   ============================================================ */

.process-timeline-section,
.deliverables-section,
.schedule-status-section,
.next-step-section {
  margin-bottom: 48px;
}

.process-timeline-section h2,
.deliverables-section h2,
.schedule-status-section h2,
.next-step-section h2 {
  font-size: 22px;
  margin-bottom: 8px;
}

.section-intro {
  color: var(--color-text-secondary);
  font-size: 15px;
  margin-bottom: 24px;
}

.timeline-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.timeline-step {
  padding: 24px 20px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
  position: relative;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: var(--color-accent);
  color: var(--color-primary);
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 12px;
}

.timeline-step h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.timeline-step p {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.deliverables-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.deliverable-item {
  padding: 24px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.deliverable-item h3 {
  font-size: 17px;
  margin-bottom: 12px;
}

.deliverable-list {
  list-style: disc;
  padding-left: 20px;
  margin-bottom: 8px;
}

.deliverable-list li {
  font-size: 14px;
  color: var(--color-text);
  margin-bottom: 4px;
}

.deliverable-note {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.schedule-note {
  margin-top: 16px;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.next-step-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.next-link {
  display: inline-block;
  padding: 10px 24px;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
}

.next-link:hover {
  background-color: var(--color-accent);
  color: var(--color-primary);
}

.aside-links li {
  margin-bottom: 10px;
}

.aside-links a {
  font-size: 14px;
  color: var(--color-primary);
}

.aside-links a:hover {
  color: var(--color-accent);
}

.aside-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.aside-figure img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.aside-figure figcaption {
  padding: 8px 12px;
  font-size: 12px;
  color: var(--color-text-secondary);
  background-color: var(--color-bg-soft);
}

/* ============================================================
   8. Pages —— 常见问题
   ============================================================ */

.page-heading {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px;
}

.page-subtitle {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 720px;
  margin-bottom: 24px;
}

.faq-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px;
}

.faq-intro {
  margin-bottom: 24px;
}

.faq-intro h2 {
  font-size: 22px;
  margin-bottom: 8px;
}

.faq-intro-text {
  color: var(--color-text-secondary);
  font-size: 15px;
}

.faq-answer p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.faq-boundary {
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-lg);
  margin: 32px auto;
}

.boundary-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.boundary-item {
  padding: 20px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.boundary-item h3 {
  font-size: 15px;
  margin-bottom: 8px;
}

.boundary-item p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.faq-cta {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
}

.cta-content {
  padding: 40px;
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-lg);
  text-align: center;
}

.cta-content h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.cta-content p {
  color: var(--color-text-secondary);
  font-size: 15px;
  max-width: 560px;
  margin: 0 auto 24px;
}

.cta-links {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-link {
  display: inline-block;
  padding: 10px 24px;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
}

.cta-link:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* ============================================================
   9. Pages —— 关于我们
   ============================================================ */

.about-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
}

.about-position {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-lg);
  margin-bottom: 32px;
}

.about-position-copy .section-title {
  font-size: 22px;
  margin-bottom: 16px;
}

.about-position-copy p {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.about-position-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.about-position-figure img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.about-organization {
  margin-bottom: 32px;
}

.about-organization .section-title,
.about-standard .section-title {
  font-size: 22px;
  margin-bottom: 8px;
}

.section-lead {
  color: var(--color-text-secondary);
  font-size: 15px;
  margin-bottom: 24px;
}

.about-org-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.org-item {
  padding: 20px 24px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.org-item-title {
  font-size: 16px;
  margin-bottom: 6px;
}

.org-item-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.about-standard-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.standard-card {
  padding: 24px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.standard-card-title {
  font-size: 16px;
  margin-bottom: 8px;
}

.standard-card-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* ============================================================
   10. Pages —— 客户服务指南
   ============================================================ */

.guide-layout {
  grid-template-columns: 1fr 300px;
}

.guide-content {
  min-width: 0;
}

.version-bar {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin-bottom: 32px;
}

.version-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.version-item dt {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
}

.version-item dd {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
}

.account-demo,
.benefits-catalog,
.usage-records,
.privacy-settings,
.version-history {
  margin-bottom: 40px;
}

.account-demo h2,
.benefits-catalog h2,
.usage-records h2,
.privacy-settings h2,
.version-history h2 {
  font-size: 20px;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
}

.account-demo > p,
.benefits-catalog > p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.demo-card {
  padding: 20px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.demo-fields {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.demo-fields div {
  padding: 12px;
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-sm);
}

.demo-fields dt {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
}

.demo-fields dd {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
}

.benefits-list,
.privacy-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.benefits-list li,
.privacy-list li {
  padding: 14px 18px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--color-text);
}

.record-block {
  margin-bottom: 20px;
}

.record-block h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.record-block p {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.version-list li {
  margin-bottom: 8px;
}

.version-list a {
  display: block;
  padding: 12px 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--color-primary);
}

.version-list a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.sidebar-links li {
  margin-bottom: 10px;
}

.sidebar-links a {
  font-size: 14px;
  color: var(--color-primary);
}

.sidebar-links a:hover {
  color: var(--color-accent);
}

.sidebar-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.sidebar-figure img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.sidebar-figure figcaption {
  padding: 8px 12px;
  font-size: 12px;
  color: var(--color-text-secondary);
  background-color: var(--color-bg-soft);
}

/* ============================================================
   11. Pages —— 404
   ============================================================ */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  background-color: var(--color-bg-soft);
  flex: 1;
}

.error-content {
  text-align: center;
  max-width: 480px;
}

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 16px;
}

.error-content h1 {
  font-size: 24px;
  margin-bottom: 16px;
}

.error-desc {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.error-tip {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
}

.error-home-link {
  display: inline-block;
  padding: 12px 32px;
  background-color: var(--color-accent);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
}

.error-home-link:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* ============================================================
   12. Responsive —— 响应式
   ============================================================ */

/* ---------- 平板 ---------- */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-media {
    max-width: 640px;
  }

  .schedule-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .timeline-horizontal {
    grid-template-columns: repeat(2, 1fr);
  }

  .timeline-steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .layout-shell,
  .page-layout,
  .guide-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .topic-card {
    grid-template-columns: 220px 1fr;
  }
}

/* ---------- 移动端 ---------- */
@media (max-width: 768px) {
  .topbar-inner {
    padding: 6px 16px;
    font-size: 12px;
  }

  .header-inner {
    padding: 0 16px;
    min-height: 60px;
    gap: 16px;
  }

  .brand-name {
    font-size: 18px;
  }

  .brand-slogan {
    font-size: 11px;
  }

  .nav-toggle {
    display: flex;
  }

  .main-nav {
    order: 3;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 8px 24px rgba(11, 31, 58, 0.1);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px;
    gap: 0;
    z-index: 200;
  }

  .nav-list.is-open {
    display: flex;
  }

  .nav-item {
    border-bottom: 1px solid var(--color-border);
  }

  .nav-item:last-child {
    border-bottom: none;
  }

  .nav-link {
    display: block;
    padding: 12px 8px;
    font-size: 15px;
  }

  .nav-link.is-current::after {
    display: none;
  }

  /* 页面标题 */
  .page-header {
    padding: 24px 16px 8px;
  }

  .page-title {
    font-size: 26px;
  }

  .breadcrumb {
    padding: 12px 16px 0;
  }

  .container {
    padding: 0 16px;
  }

  .layout-shell,
  .page-layout,
  .guide-layout {
    padding: 0 16px;
  }

  /* 首页 */
  .hero-inner {
    padding: 40px 16px;
  }

  .hero-content h1 {
    font-size: 26px;
  }

  .hero-figure img {
    height: 220px;
  }

  .hero-bg-grid {
    display: none;
  }

  .section-block,
  .service-preview,
  .knowledge-digest,
  .process-overview,
  .faq-preview {
    padding: 48px 0;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 24px;
  }

  .schedule-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .timeline-horizontal {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .process-cta {
    margin-top: 24px;
  }

  .related-links {
    padding: 24px 16px;
    gap: 12px;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    padding: 32px 16px 24px;
  }

  /* 服务页 */
  .topic-card {
    grid-template-columns: 1fr;
  }

  .topic-figure img {
    height: 200px;
  }

  /* 知识页 */
  .category-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .entry-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .content-figure img {
    height: 200px;
  }

  /* 合作流程 */
  .timeline-steps {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* 关于 */
  .about-position {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 24px 16px;
  }

  .about-position-figure img {
    height: 220px;
  }

  .about-standard-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .about-section {
    padding: 32px 16px;
  }

  /* FAQ */
  .boundary-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .faq-section {
    padding: 24px 16px;
  }

  .cta-content {
    padding: 24px 16px;
  }

  /* 指南 */
  .version-meta {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .demo-fields {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .content-media-primary img {
    height: 200px;
  }

  .content-media-inline img {
    height: 200px;
  }
}

/* ---------- 小屏手机 ---------- */
@media (max-width: 390px) {
  .hero-cta {
    flex-direction: column;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    text-align: center;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .footer-col h3 {
    margin-bottom: 12px;
  }

  .schedule-card {
    flex-direction: column;
    gap: 12px;
  }

  .card-date {
    min-width: 56px;
    height: 56px;
    flex-direction: row;
    gap: 8px;
  }

  .date-day {
    font-size: 22px;
  }

  .digest-item {
    flex-direction: column;
    gap: 12px;
    padding: 16px;
  }

  .digest-date {
    flex-direction: row;
    gap: 8px;
    min-width: 48px;
    height: 48px;
  }

  .date-num {
    font-size: 18px;
  }

  .error-code {
    font-size: 56px;
  }
}